Solid solution between piemontite and androsite-(La), a new mineral of the epidote group from Andros Island, Greece

Other| June 01, 1996 Solid solution between piemontite and androsite-(La), a new mineral of the epidote group from Andros Island, Greece Paola Bonazzi; Paola Bonazzi Universita di Firenze, Dipartimento di Scienze della Terra, Florence, Italy Search for other works by this author on: GSW Google Scholar Silvio Menchetti; Silvio Menchetti Search for other works by this author on: GSW Google Scholar Thomas Reinecke Thomas Reinecke Search for other works by this author on: GSW Google Scholar American Mineralogist (1996) 81 (5-6): 735–742. https://doi.org/10.2138/am-1996-5-620 Article history first online: 02 Mar 2017 Cite View This Citation Add to Citation Manager Share Icon Share Twitter LinkedIn Tools Icon Tools Get Permissions Search Site Citation Paola Bonazzi, Silvio Menchetti, Thomas Reinecke; Solid solution between piemontite and androsite-(La), a new mineral of the epidote group from Andros Island, Greece. American Mineralogist 1996;; 81 (5-6): 735–742. doi: https://doi.org/10.2138/am-1996-5-620 Download citation file: Ris (Zotero) Refmanager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentBy SocietyAmerican Mineralogist Search Advanced Search Abstract A new member of the epidote group, androsite-(La), was found at Andros Island, Cyclades, Greece, as an accessory constituent of metamorphic Mn-rich rocks. Associated minerals are rhodochrosite, braunite, rhodonite, spessartine, and quartz. The mineral is brown-red in color, transparent with vitreous luster and very strong pleochroism. Lattice parameters are a = 8.896(1), b = 5.706(1), c = 10.083(1) Å, β = 113.88(1)°, V= 468.0(1) Å3, Z = 2, space group P21/m. Crystal-structure refinement and chemical analyses yielded the ideal formula (Mn,Ca)REEAlMn3+Mn2+(SiO4)(Si2O7)O(OH). Another Mn-rich sample of the epidote group was found at Varenche Mn-mine, Valle di Saint Barthélémy, Western Alps, Italy; because of its chemical composition and crystallographic features, it can be considered an intermediate member of the piemontite-androsite-(La) series. This content is PDF only. Please click on the PDF icon to access. First Page Preview Close Modal You do not have access to this content, please speak to your institutional administrator if you feel you should have access.